On Monday, a spokesman for West Sussex Fire and Rescue Service said: “The fire was extinguished using two high pressure hoses, with crews using six sets of breathing apparatus. The premises was fully ventilated.

"Our crews left the scene at 18.20, leaving the premises in the hands of the utilities provider and building owner.”

Paramedics were also at the scene.

On Monday, a spokesman for the South East Coast Ambulance Service said they sent two ambulances to the scene. They said: "Two patients were taken to Worthing Hospital, one with breathing problems after smoke inhalation and another with a head injury after a fall."